Nutritional guidelines on your box of 'healthier' cereal usually relates to a 30g portion and you could actually be eating FIVE cubes of sugar

Worst offenders

Special K - 93g

Alpen - 83g

Kellogg's Crunchy Nut Granola - 82g

Kellogg's Crunchy Nut Cornflakes - 78g

Sainsbury's Raisin Wheats - 75g

Lucky Charms - 62g

Coco Pops - 58g

An average bowl of Kellogg’s Crunchy Nut Granola, 82g, was found to have just under 22g of sugar and 390 calories, with a 62g serving of Lucky Charms containing just under 23g of sugar and 250 calories.

A total of 63 per cent of Brits regularly have cereal for breakfast, although the majority had no idea about the amount of sugar they really contain.

Diagram shows how much cereal you should actually be eating for breakfast - and it's much smaller than you think

A spokesman for Wren Kitchens said that we are eating 'even more' sugar than shown in the the study as many 'hidden sugars' are in cereals, including added sugars in dextrose, molasses and fructose.

He said: "The Behind the Label experiment asked participants to pour their regular breakfast bowl of cereal into bowl.

"The experiment reveals the average weight of each cereal poured during the experiment and what this looks like in sugar, showing how misleading the nutritional information on cereal packets can be based on often unrealistic portion weights labelled."

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Nutritionist Charlotte Stirling-Reed said of the Wren Kitchens survey: “People may consume more if they consider it to be healthier.”

David Gillespie, the researcher who conducted the study, said Brits were working their way through nearly a kilo of sugar a week in all foods and drinks consumed.

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